luceos At this point, if you leave the background out, everything is white. For the background, I used the same color that I have defined as a background color under Admin > Appearance. I don't know if that would work for everyone, but very likely could. Apart from defining that background color, the other styles should be generic enough to fit. It does seem like the user should have some control over this background color as they do with other elements and with tags. So, (1) either pull from that background color already defined in Flarum core or (2) add a color picker somewhere or (3) define a color that users would have to override in custom CSS.